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(No Model.)

R. K. BOYLE.

" AUTOMATIC TBLBGRAPH.

\. Patented Nov. 29,1881.-

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"Mw j? 'WW1/weie @u MMM IINTTED STATES PATENT OEricEC ROBERT K. BOYLE, OF BROOKLYN, ASSIGNOR TO DANIEL H. CRAIG, OF

I NEW YORK, N. Y.

AUTOMATIC TELEGRAPH.

SPECIFICATION forming part of Letters Patent No. 250,132, dated November 29, 1881.

Application tiled March 24, 1881.

To all whom it may concern:

Be"it known that I, ROBERT K. BOYLE, a subject of the Queen ot' Great Britain, residing at Brooklyn, in the county ot`Kings and State of New York, have invented new and useful Improvements in Automatic Telegraphs, of which the following is a specification.

This invention relates to a new method of producing signals by electricity, which consists of a sheet-metal band, a new code of transmitting-signs produced on said metal band by means ofasuitable non-conductorof electricity, and two springs which bear upon said metal band, and one of which is provided with a sharp or narrow end, while the end ofthe other spring is extended or provided with afoot. The signs are composed of parallel strokes, some ot which are shorter than the others, and at dit'- ferent distances apart, the long strokes being in the path of the extended spring, while all the strokes arein the path of the narrow spring. Each ofthe springs is connected with the line and with a battery, and as long as either of said springs is in contact with the meta-l band its battery is in a loop-circuit; but whenever one of said springs passes over one of the strokes of the transmitting-signs its battery is thrown on the 1ine,and acorrespondingsignal is produced in the ieceivinginstrument of the distant station.

This invention is illustrated in the accompanying drawings, in which Figure 1 repre sents a diagram of my automatic telegraph when the receiving-instrument consists ot' a pen and a strip of chemically-prepared paper. Fig. 2 shows my code of signals.

Similar letters indicate corresponding parts.

In the drawings, the letter A designates a band, made of sheet-brass or any other suitable metal, on which the messages to be transmitted are produced by painting or otherwise delineating thereon the appropriate signs taken from my new code of transmitting-signs. By reference to Fig. 2 it will be seen that these signs are composed of parallel strokes, some of which arelonger than the rest, and which are at different distances apart. The sign which is to produce in the receiving-station the letter a in the well-known Morse code of signals consists (No model.)

in my transmitting-code of one short stroke and onelongstroke, theletter b7 ofone long stroke and three short strokes, the lettersi77 and o7 each of two short strokes, which, however, are at different distances apart, and so on, as will be readily seen from. an examination of Fig. 2 ofthe drawings. For the purpose of producing the transmitting-signs on the metal band A, amaterial must he used which is a bad conductor ot' electricity, such as a solution of indiarubber or shellac.

The metal band A rests upon a metallic roller, C, which connects by a wire, 10, with one pole of a battery, B, the other pole of which connects with the line-wire 11. Fro'm the linewire extends a wire, 12, to a spring, D, the free end of which bears upon the metal band A. The wire 10 connects by a wire, 13, with one pole of a battery, B', the other pole of which connects by a wire, 14, with the earth. From the wire 14 extends a wire, 15, to a spring, D', the free end of which bears upon the metal band A. The line-wire l1 connects with a metallic pen, which rests upon a metallic roller, G, that connects by a wire, 16, with the ground.

The free end of the spring D is in such a position that it meets only the long strokes of the transmitting-signs, and said end is bent so as to form a foot or extension, whereby the metallic connection between the spring and the metal band is broken for a certain period of time whenever said toot rests upon one of a long stroke of one of the transmitting-signs, while the free end of the spring D is in such a position that itmeets the long strokes ofthe transmitting-signssimultaneouslywith the foot ofthe spring D, and that it also meets all the short strokes of the transmitting-signs, the end of said spring D being so formed that the metallic connection between it and the metal spring' D, and wire l5 back to the battery. writing apparatus, an ordinary sounder may,

But whenever the point ot one ofthe springs passes over one of the strokes of one ofthe transmitting-sigus the current ot' the corresponding battery is thrown on the line, and a mark is produced upon the chemically-prepared paper in the receiving-station, said mark being a stroke whenever the foot of the spring D passes over one ot' tne long strokes in the transmittingstation, and a dot whenever the point of the spring D passes over one of the short strokes in the transmitting-station. For instance, if the metal band A is moved forward in the direction of the arrow marked on it in Fig. 1, the point ofthe spring D will tirst meet a short stroke ofthe transmitting-sign L the current of the battery B is thrown on the line, land a dot is produced by the action ofthe pen E on the chemically*prepared paper; then the foot ot' the spring D will pass over the long stroke ot' the sign f andthe current ofthe battery B is thrown on the line, thereby producing a stroke on the chemically-prepared paper corresponding in length to the length ofthe foot of the springD; and tinally another dot will be produced 011 the chemically-prepared paper as the point ofthe spring D passes over the last short stroke ot' the sign f on the metal band. From this example it will be seen that by my code of transmitting-signs signals are produced on'the chemically-prepared paper in the receiving-station corresponding to the letters of the Morse alphabet. Instead of the chemical however, be used in the receiving-station, and the signals are given by long or short sounds or pauses usual in Morse work.

By referring to Fig. 2 it will be seen that the forni of my transmitting-signs is such that the same, with but little practice, can be produced on the metal band with great rapidity, either by the sender of a message or by the operator in the transmittingstation.

In Fig. 2, I have shown transmitting-signs for the twen ty-sixletters ofthe alphabet and for the sign 8L; but it will be readily understood that the number ofmy transmittingsigns can be readily increased so as to include figures or any other characters.

That I claim as new, and desire to secure by Letters Patent, is-

The combination, substantially as hereinbcfore described, of a metal band, non-conducting transmitting-signs marked on said band, two sp1-ings, one of which is provided with a foot and the other with a sharp or narrow end, two batteries, one for each spring, a line-wire including both batteries, and a suitable receiving-instrument.

In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing witnesses.

ROBERT K. BOYLE.

Witnesses:

W. HAUFF, E. F. KASTENHUBER. 

